Auger-handle



UNTTED STATES PATEN T OFFICE.

AUGUSTUS THAYER, OF MALDEN BRIDGE, NEW YORK.

AUGER-HANDLE.

Specicaton of Letters Patent No. 7,815, dated December 3, 1850.

To all 'whom z'z may concern f Be it known that I, AUGUSTUS THAYER, ofWalden Bridge, Columbia county, State of New York, have invented a newand useful Augur-Handle, which I Call Thayers Improved Augur-I-Iandle,and I declare the following specification, with the drawing theretoannexed as part thereot1 to be a full and perfect description thereof.

rlhe drawing represents one of my said handles with the upper part of anaugur shankin its place the lefthalf of the draw ing from a to l)showing the external appearance of the handle to which the right halfalso corresponds externally, and the right half of the drawing showing asection of kthe handle vertically through its axis with the internalapparatus thereof.

a, c, e, d represents a solid piece of wood, the front from a to e beingturned of the form usually adopted for augur handles,l

the part from c to e of a true cylindrical form of the full thicknessfor a strong handle, the part from e to f being cut down to show a smallshoulder at e and thence of a slight taper and the part from f to v(lcut into a screw of three or four turns of the thread.

The part from c to e is secured by a metal band, as shown in the lefthand side of the drawing, the band and wood being Apierced to receivethe augur shank X which passes up through it. A small groove is cut intothe lower part of the wood, next the band, so as to receive a steeldetent or catch whose shape is shown by Fig. 2 in perspective. It islong enough to extend from the shoulder at e into the shank X which itpenetrates by a wedge shaped point, the shank having a wedge shaped nickcut into it to admit this point. This nick has its sides at an anglemore acute to each other than those of the point of the detent to permitthe detent to press the augur shank upward as well as to hold it irm.This detent n when not pressed into the nick is kept back from enteringit, by a small spring, which lies in a small mortise cut through thehandle, its upper end being formed into a head screwing into the metalband and its lower end entering a notch in the detent.

The remaining part of the handle consists of h, z', 7c, which is a pieceof wood corresponding to the other end of the handle in material andexternal form, and bored to lit accurately the stern e, f, and screws f,d, the inner ends of L and 7c passing under the metal band a little way.

Operation: It will be readily perceived that when the exterior part isscrewed up firmly on the stem e, el, its butt K will press the detent ninto the augur shank nick, pressing` the shank upward by the inclinededges of the detent and holding it firmly in its place when so pressedup, and that to release the augur it will be only necessary to give ahalf turn or so of the outer handle h, z', la when the spring S willretract the detent.

The advantages of this handle above others now made I consider to be acombination of strength and simplicity. The

fact that the principal part ofthe entire handle is in one piece fromend to end from a, to cl strengthened by a band of metal where the shanksocket pierces it instead of being divided into two parts near thecenter, gives it great strength and the operating parts are few, notliable to get out of repair, of common materials and cheaply made. Thehandle however may be made of any materials that are convenient for itsconstruction, although for economy wood AUGUSTUS THAYER.

Witnesses:

P. W. GROOT, R. Y. DE WITT.

